Need a marine grade drink holder that mounts on vertical or horizontal surface This cup holder is designed with that versatility in mind. Constructed of marine-grade polymer, it fits cans and bottles in coozie-type insulators, handled mugs, bottled water of many types and sizes, will also accommodate most binoculars. Pre-drilled on back and bottom for four 2" suction cups (included) for side or surface mount. May also be permanently attached.Double drink/binocular holder 100% marine-grade polymer Suction cup or screw mount Mount on vertical or horizontal surface Dimensions 8 1/2" x 4 3/4 "x 3"Lifetime Warranty